Molding-jacket.



O. 0. WOOD.

MOLDING JACKET.

APPLIOATION FILED JULY 30, 1913.

0 Patented June 23, 19.14.

CHARLES 0. WOOD, 0F CHAMBERSBURG, PENNSYLVANIA MOLDING-JACKET.

' Specification of Letters Patent.

Application filed July 30, 1913.

Patented June 23, 1914 Serial No. 782,027.

I '0 all whom it may concern Be it known that 1, CHARLES O. lVooo, acitizen of the United States, residing at Chambersburg, in the county ofFranklin and State of Pennsylvania, United States of America, haveinvented certain new and useful Improvements in Molding-Jackets; and Ido hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it ap )ertains to make and use the same, reference beinghad to the accompanying drawings, and to letters or figures of referencemarked thereon, which form a part of this specification.

It is well known to molders that no two flasks, presumably of the samesize, are alike. They usually difi'er from one another by a smallfraction of an inch in one or more of their dimensions, or in the slantof their sides, thereby deviating slightly from their true geometricalform in horizontal or vertical section, and this is true, whether theflask consists of two parts or more than two parts. It is customary inusin flasks to place them on a bottom board, rst filling the drag aroundthe wooden or other pattern, then placing the cope on the drag andcompleting the mold. The cope and drag are then separated and thepattern removed, whereupon the cope is replaced on the drag and theflask is removed, leaving the sand mold supported only by the bottomboard. The flask is then used for making other molds. Ordinarily themetal cannot be poured into the mold withoutsupporting the sides of themold, for the reason that, (where there is to be a large volume of metalin the mold,) the weight of the fluid metal in the mold will push outthe sand and damage or destroy the mold. In order to prevent this, it isthe present practice to place a rigid frame or casing presumably of thesame size as the flask over the mold. These casings being commonly rigidframes ofcast iron, sheet metal or wood, have the same defects as theflasks in which the molds are made, and usually have greater variationsthan the flasks, as they are not so carefully made. If a cast iron orother rigid casing be used, the variations above-referred to arepresent, consequently there are some parts of the side of the mold thatcannot touch theside ofthe casing or frame, and the supporting of themold is not uniform,

, any of the before mentioned discrepancies in the dimensions of theflask.

Referring to the drawings, in which like parts are similarlydesignated-1 igure 1 is a perspective view of one form of my invention:Fig. 2 is a like view of a modification. Fig. 3 is a perspective view ofanother form. Fig. 4 1s a section on line 4% of Fig. 3, and Fig. 5 is aside elevation of a. mold, the irregularities being exaggerated,

and showing a acket in place and inclined.

The molding jacket comprising my invention comprises a frame 1, 11, or21, to which are connected mold engaging members or plates, 2, 13 or 22,which may be of thin iron, or of wood, or any other suitable material.

In the drawings I have shown a rectangular jacket, but any other shapemay be used with correspondingly shaped molds.

In the figures of drawing I have illustrated jackets in which all of theplates, or all but one of the side plates are arranged to have a smallamount of universal movement sufficient to automatically compensate theirregularities in molds made in different flasks of the same size. Whenin use my jacket is not supported by the bottom board b of the mold, butby contact with sides of the sand mold itself. In order to permit theplates to automatically accommodate themselves to the sides of the mold,the frame must either be yielding, or the plates must be so connected tothe frame that they have slight movement with respect thereto.

In Fig. 1 l have illustrated a yielding frame 1 comprising a thin pieceor strip of sheet metal, preferably, but not necessarily, spring metal,to which the mold engaging members or plates 2 are connected by screws8, bolts, or similar securing means. By

reason of the frame 1 being yielding and T flexible or resilient, as'thejacket is placed 'on the mold the plates 2 readily accommodatethemselves to variations in taper and deviation of the horizontalsection from a true rectangle. It is, of course, obvious that a roundwire may be secured in any convenient manner to the sides of wood of mynovel jacket.

In Fig. 2 the frame 11 is a round bar of iron or wire, to which themold-engaging members or plates 13 are connected. These plates areprovided with perforated ears 13 through which the frame loosely passes.The ends of these plates are provided with projections or lugs 14' and15, the lugs 14 at one end of the plates being near or at the side edgesof the plate, and those 15 at the other end ofthe plate being nearer themiddle of the plate and arranged to pass between the lugs of anadjacentplate. The lugs 14-, 15, on adjacent plates at the corners mutuallyprevent the plates 13 from rotating on the frame 11 to a horizontalposition, said lugs having sufficient play between them to permit theplates which are loosely connected to the frame, to have a slight amountof universal movement with respect to the frame 11, which latter isyielding or flexible. As illustrated in Fig. 2, the frame element 11 orthat portion of the jacket that permits the automatic adjustment of thesides 12, 13, passes around the corner of the jacket, and lies in asubstantially horizontal plane between the lugs of each pair.

In Fig. 3 I have illustrated a rigid frame, 21, on which the plates ormold engaging members 22 are mounted. The manner of connecting theplates to frame 21 is more clearly shown in the sectional view, Fig. 4:.The plates 22 are each provided with a headed pin or bolt 23 that passesthrough a hole 24-in the frame somewhat larger than the screw, pin orbolt 23. On each side of the frame is a'washer 25, 26', the one having arounded or curved face adjacent the inner face of the side of the frame.The bolt 23 passes through these Washers. On one or both sides of thehole 24, and on the inner face of the side of the frame is a recess orrecesses 27, into which projects the end of a pin or! pins 28 secured tothe plate 22. These recesses 27 are larger than the end of the pins 28.The structure is such as to permit a small amount of universal movementof the plate with respect to the frame, and the pin or pins 28 preventthe plate from turning entirely around'on the bolt 23.

I have previously stated that one of the plates need not have universalmovement; and in Figs. 2 and 3 I have shown the plates 12 and 22respectively, as connected to the frame by two connecting elements 13and 23, respectively. These two structures will permit one of the platesto swing on its longitudinal axis. There is a decided advan- 1,1o1,1eo

tage in not supporting the acket by causing the plates to rest on thebottom board I) and supporting the entire jacket by the mold itself. I fthe distortion of the mold is considerable, or if the mold be undulysmall, the jacket may be placed on the mold in an inclined position, asillustrated in Fig. 5, thus the jacket may be used within greaterlimits; in other words, if the dimensions of the mold be slightly lessthan normal distance between sides of jacket, the inclination of thejacket tends to overcome this discrepancy.

I claim 1. A molding jacket comprising a. continuous flexible frame, aplurality of mold engaging members and connections between some or allof the members and frame, permitting universal movement of some or allof the members.

2. A molding jacket comprising a plurality of mold engaging members, ayielding frame to which said members are connected, said membersarranged to be supported only by the sides of the mold when in operativeposition.

3. A molding jacket comprising a plurality of plates, a flexible frameto which said plates are loosely connected, said plates arranged to besupported when in operative position by the sides of the mold above itsbottom board.

l. A molding jacket comprising a plurality of mold engaging plates, aflexible frame and means for connecting some or all of the plates totheframe to permit a limited amount of universal movement of the plateswith respect to the frame, said jacket arranged to be supported only bythe sides of the mold when in operative position.

5. A molding jacket comprising a frame, a mold engaging plate connectedto each side of the frame, means to connect one of the plates to theframe to rock about its horizontal axis, and means for connecting theother plates to said frame to permit of their universal movement.

6. A molding jacket comprising a yielding frame, and mold-engagingmembers secured to the frame. e j

7. A molding jacket comprising a yielding frame and mold engagingmembers connected to the frame.

8. A molding jacket comprising a closed yielding frame and mold engagingmembers loosely connected to the frame.

9. A molding jacket comprising a yielding frame and mold engagingmembers connected to the frame, the connection of one of said memberspermitting a swing about a horizontal axis and the connection of theother members permitting their universal movement.

10. A molding jacket comprising a frame, mold engaging members movablyconnected to the frame, said members loosely interlocking at theiradjacent ends to confine the movement of the members.

11. A molding jacket comprising a round yielding frame, a plurality ofmold engaging plates havin ears thereon through which said frame ooselypasses, said members loosely interlocking adjacent ends to limit theextent of universal movement of the members.

12. A moldin jacket havin automatically movable si es and means orconnecting the sides, the'ends of said sides arranged with respect toone another to cause one end of one side to limit the movement about alongitudinal axis of an adjacent end of the other side at the corner.

13., A moldin jacket havin automatically movable si es and means orconnectcally, movable sides and means connecting the sidestogether, eachof said sides having a pair of end lugs at its edges and a pair of endlugs intermediate its edges and middle, whereby the lugs of adjacentsides at the corners of the jacket will mutually limit the swing or tiltof the plate on a horizontal' axis.

15. A molding jacket having sides self adjusting to. the mold, means forconnectin said sides together while permit-ting said self adjustment,each of said sides having a lug at its upper and its lower edge on oneend, a lug between the middle and its upper edge and a lug between themiddle and its lower edge on the other end, said latter lugs on one sidepassing between middle and its lower edge on the other end,

said latter lugs on one side passing between the former lugs on anotherside at a corner of the jacket mutually limiting the tilting of thesides, said frame arranged in a plane passing between the lugs of eachpair of lugs at the corners of the jacket.

17 In a molding jacket having a movable side, lugs on the end of saidside to limit the swing of the side about a horlzontal axis in twodirections when co-acting wlth an adjacent side.

In testimony that I claim the foregoing as my invention, I have signedmy name in presence of two subscribin witnesses.

OHARL S O. WOOD. Witnesses W. T. BRoNsoN, CHAS. J. ZULLINGER.

